J/A+A/403/93 Photometry of AGB stars in NGC 185 and NGC 147 (Nowotny+, 2003)
A census of AGB stars in Local Group galaxies. II. NGC 185 and NGC 147.
Nowotny W., Kerschbaum F., Olofsson H., Schwarz H.E.
<Astron. Astrophys. 403, 93 (2003)>
=2003A&A...403...93N 2003A&A...403...93N
ADC_Keywords: Galaxies, photometry ; Stars, giant ; Stars, carbon
Keywords: stars: AGB and post-AGB - stars: carbon - galaxies: Local Group -
galaxies: individual: NGC 185, NGC 147 - surveys
surveys
Description:
The tables represent results of an ongoing photometric survey of Local
Group galaxies, using a four filter technique based on the method of
Wing (1971, Proc. of the Conference on Late-Type Stars, ed. G.W.
Lockwood and H.M. Dyck, KPNO Contribution 554, 145) to identify and
characterise the late-type stellar content. Two narrow band filters
centred on spectral features of TiO and CN allow us to distinguish
between AGB stars of different chemistries [M-type (O-rich) and C-type
(C-rich)]. The major parts of two dwarf galaxies, NGC 185 and NGC 147,
were observed; 154 new AGB carbon stars in NGC 185 and 146 in NGC 147
were identified.
All detected stars (called sample 1 in the paper) are included in the
tables, with coordinates and photometric properties. All stars of
sample 1 have photometry in the filters V and i. For all stars, which
are in addition included in the smaller sample 2 (and have also
photometry in the narrowband filters TiO and CN) the colour index
(TiO-CN) is provided, too.
In the tables a chemistry flag F marks in which classification group
the star falls. All stars of sample 2 can have "c" for Carbon star,
"o" for oxygen-rich M-type star or "r" for the rest. This correspond
to the selection areas in Figure 4 of the paper. The flag for all
stars of sample 1, which are not already included in sample 2 (only
Vi-photometry) is "u" for unclassified.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
ngc185.dat 55 26496 Coordinates, chemistry flag and photometry of
stars in NGC 185
ngc147.dat 55 18300 Coordinates, chemistry flag and photometry of
stars in NGC 147
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See also:
J/A+A/418/33 : RI photometry of C stars in NGC 147 (Battinelli+, 2004)
J/A+A/445/69 : JHK' photometry of C stars in NGC 147 (Sohn+, 2005)
Byte-by-byte Description of files: ngc185.dat ngc147.dat
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Bytes Format Units Label Explanations
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1- 8 I8 --- ID Identification number
10- 11 I2 h RAh Right ascension (J2000)
13- 14 I2 min RAm Right ascension (J2000)
16- 21 F6.3 s RAs Right ascension (J2000)
23 A1 --- DE- Declination sign (J2000)
24- 25 I2 deg DEd Declination (J2000)
27- 28 I2 arcmin DEm Declination (J2000)
30- 34 F5.2 arcsec DEs Declination (J2000)
36 A1 --- F Chemistry flag (1)
38- 42 F5.2 mag imag Photometry in Gunn i filter
44- 48 F5.2 mag V-i Colour index (V-i)0
51- 55 F5.2 mag TiO-CN ? Colour index (TiO-CN)0
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Note (1): Chemistry flag:
c: Carbon stars (in sample 2)
o: oxygen-rich M-type stars (in sample 2)
r: rest (in sample 2)
u: unclassified; stars of sample 1, which are not included in sample 2
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Acknowledgements: Walter NOWOTNY
References:
Nowotny et al., Paper I 2001A&A...367..557N 2001A&A...367..557N
(End) Patricia Bauer [CDS] 03-Mar-2003